Continuous Core Web Vitals monitoring and optimization
Monitor how real users experience your production website. Protect Google search rankings with automated field telemetry for LCP, INP, and CLS.
Why Google Search penalizes poor Web Vitals
Google uses real-world Chrome User Experience Report (CrUX) metrics to rank search results. When your p75 field metrics degrade, rankings and organic traffic drop immediately.
- xGoogle CrUX reports take 28 days to update, leaving you blind to recent regressions
- xInteraction to Next Paint (INP) replaced FID, penalizing unoptimized JavaScript event handlers
- xSingle slow third-party scripts or uncompressed hero images trigger site-wide ranking drops
- xDevelopment teams cannot identify which exact production routes are failing thresholds
Real-time Web Vitals field telemetry
Open Analytics provides instant route-level visibility into your Core Web Vitals without waiting 28 days for Google's delayed public CrUX report.
Web Vitals calculation methodology
Accurate calculation adhering to official W3C and Google Web Vitals specifications.
Render Timing Detection
Measures when the largest image, SVG, or text block finishes rendering in the initial viewport before user input.
Full Session Event Duration
Measures input delay, processing time, and presentation delay across all clicks and key presses throughout the entire user session.
Session Window Shifts
Calculates the maximum layout shift session window with a 1-second gap and 5-second maximum window duration.
Production Use Cases
How engineering and growth teams rely on Open Analytics in production.
Post-Deployment Verification
Validate new releases and verify that bundle size changes or new components did not regress INP or LCP.
Core Web Vitals SEO Audits
Prepare for Google algorithm updates by systematically identifying and fixing poor-performing landing pages.
Third-Party Script Impact Analysis
Identify how third-party chat widgets, tag managers, and ad networks impact your production layout stability.
Captured Signals & Benchmarks
Precision telemetry captured with zero browser performance overhead.
| Signal | Unit | Benchmark | Description |
|---|---|---|---|
| LCP (Loading Speed) | Seconds | <= 2.5s | Measures visual loading speed. Passing requires 75% of page loads to render under 2.5 seconds. |
| INP (Page Responsiveness) | Milliseconds | <= 200ms | Measures interactive responsiveness. Passing requires 75% of user interactions to complete under 200ms. |
| CLS (Visual Stability) | Score | <= 0.1 | Measures visual layout stability. Passing requires 75% of pageviews to have a shift score under 0.1. |
| FCP (First Paint) | Seconds | <= 1.8s | Measures the time when the browser first renders any DOM content (text, image, non-white canvas). |
Privacy by Design & GDPR Exemption
Open Analytics processes telemetry without invasive user surveillance.
- Zero personal data is collected or associated with Web Vitals measurements
- Calculations use native browser APIs without inspecting user screen content
- Anonymous aggregated metrics can be shared across engineering and SEO teams safely
- Strict 365-day automated TTL data retention
<!-- Automated Core Web Vitals collection --> <script defer src="https://api.openanalytics.org.in/open.js" data-project-id="YOUR_PROJECT_ID" ></script>
Async non-blocking beacon weighing <3.2 KB Brotli compressed.
Frequently Asked Questions
Start capturing precision telemetry in 60 seconds
Deploy on your own infrastructure or launch on Open Analytics Cloud. Zero cookies required.